20=7-(x+9)

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Solution for 20=7-(x+9) equation:


Simplifying
20 = 7 + -1(x + 9)

Reorder the terms:
20 = 7 + -1(9 + x)
20 = 7 + (9 * -1 + x * -1)
20 = 7 + (-9 + -1x)

Combine like terms: 7 + -9 = -2
20 = -2 + -1x

Solving
20 = -2 + -1x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add 'x' to each side of the equation.
20 + x = -2 + -1x + x

Combine like terms: -1x + x = 0
20 + x = -2 + 0
20 + x = -2

Add '-20' to each side of the equation.
20 + -20 + x = -2 + -20

Combine like terms: 20 + -20 = 0
0 + x = -2 + -20
x = -2 + -20

Combine like terms: -2 + -20 = -22
x = -22

Simplifying
x = -22

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